Brick-press



(No Model.)

'W. W. POTTS.

BRIGK PRESS. No. 249,987. Patented Now 22,1881.

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WITNESSES:

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, ilNiTEE STATES PATENT OFEicE.

WVILLIAM W. POTTS, OF BRIDGEPORT, PEN N SYLVANIA.

BRICK-PRESS.

SPECIFICATION forming part of Letters Patent No. 249,987, dated November 22, 1881.

Application filed September 19, 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM W. Porr'rs, a citizen of the United States, residing at Bridgeport, in the county of Montgomery, State of Pennsylvania, have invented a new and useful Improvement in Brick-Presses, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 is an end view of'the press embodying my invention. Fig. 2 is a vertical section thereof in line w x, Fig. 1. Fig. 3 is a top or plan view thereof. Fig. etis a view of a detached portion of Fig. 2.

Similar letters of reference indicate correspondin g parts in the several figures.

My invention consists of a brick-press having two cams, one for pressing the brick and the other for ejecting the same from the mold, both being on the same shaft and directly beneath the plunger,whereby the two operations of pressing and ejecting are quicklyaccomplished, and the construction of the press is simplified.

It also consists of means for removing any superabundauce of clay or material from the mold.

It also consists of means for limiting thedescent of the plunger, whereby the extent of charging of the mold is regulated.

Referring to the drawings, A represents the frame of the press, and B the drivingshaft, which is mounted thereon and receives power from any suitable source.

0 0 represent two cams, which are keyed or otherwise secured to the shaft B; and D represents an upright plunger, which is fitted in guides a rising from the bed Aot the press and enters a mold, E, which, open at top and botton1,is formed in or fitted toa bed, F, which is supported on the frame A above the shaft B, said plunger D being adapted to rest on the cams O and be elevated thereby, the lower end of the plunger carrying a friction-roller, b, with which said cams are in contact.

On the bed F is supported and guided a horizontally-arranged sliding head, G, having a vertical opening, H, which forms a chargingchamber, and above said head is sustained a stationary hopper, J, said head having a table, J, projecting from one side of its top, the throat of said hopper being adapted to communicate with the charging-chamber H when the latter is brought under the hopper by the movement of the head.

Reciprocating motionis imparted to thehead G by means of elbow-levers K, which are pivoted to said head, mounted on the frame A, and engaged by cams d on the wheels L, which latter are connected to the shaft B, and operate by means of said cams the elbow -levers, and consequently the head.

-M represents a lifter for the plunger D, consistin g of sliding pieces 0, which are placed on the bed A and have their upper faces inclined, as atf, said facesfoccupying positions beneath the plunger or its bottom guiding-pieces, f.

Pivoted, hinged, or otherwise suitably attached to the pieces 0 is a rock-shaft, N, which is mounted on the bed A and provided witha lever or handle, P, whereby the inclined faces fmay be moved under the plunger, so as to limit the descent of the same, and thus decrease the amount of clay, 850., admitted to the mold.

When the inclined faces are shifted from the plunger the latter drops to its full extent, thus leaving the mold free to receive a greater charge of clay, &c., the operation of the cams, however, not differing from that stated.

In the bed F are formed ducts g, which lead from the side of the mold E to the top of said bed, so as to form a communication between the mold and charger H or said ducts may be formed in the head G and lead from the side of the charger to the bottom of the head to provide a similar communication, the object being that when the mold is overcharged with clay, &c., the action of the plunger forces the surplus clay, &c., from the mold and returns it to the charger E.

It will be seen that when the charger H is in communication with the hopper the plunger is at its lowest point, closing the bottom of the mold E. The clay, concrete, 850., employed for making the bricks, blocks, &c., enters the charger H and fills the mold. The head G then moves partly from the mold and dwells, and the solid portion h of its lower face forms the closed top of the mold. The plunger is now lifted to a partial extent by the cam O and presses and shapes the clay in the mold, after which the head moves to full extent from the hopper, thus uncoveringthe top of the mold and shearing or cutting off the supply of clay to the charger, the table J moving with the head and closing the throat of the hopper. The plunger, after dwelling during the final movement of the head, is next elevated to full extent by the cam 0, thus raising the shaped clay or brick to the level of the bed F. The head now returns under the hopper and forces in front of it the shaped clay or brick, which may be removed or directed elsewhere, and the charging-chamber is replenished, the plunger lowered, and the mold refilled, after which the other operations hereinbefore stated are repeated.

The press, as constructed, is simple, inexpensive, compact, and serviceable.

1 am aware that it is not new to provide a brick press with a plunger for pressing purposes and another plunger for ejecting purposes; and I am also aware that it is not new to employ a plunger with two distinct sets of jointed arms or toggles, which, operated by a cam, serve to compress and eject the brick or block.

I am also aware that it is not new to relieve the plunger of an overcharge of material or increase resistance thereof by yielding bearings for the arms which advance the plunger for purposes of compression, wherefore I disclaim such features; but as I a 'oid an extra plunger and arms intermediate of the plunger and cam, and furthermore do not employ the yielding bearings for said arms, but do relieve the mold by ducts which return the surplus material to the charging-chamber, and I also make use of a lifter for adjusting the size of the charge of the mold, I believe that I have made improvements in the art; wherefore,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The mold, the sliding head with a charging-chamber and solid portion, and the plunger, in combination with two cams, both on the same shaft directly below said plunger, where by the plunger both presses and ejects without the employment of an additional plunger or arms intermediate of the cams and plunger, substantially as and for the purpose set forth.

2. The charger and plunger, in combination with the mold provided with the ducts g, substantially as and for the purpose set forth.

3. The plunger, in combination with a lifter, whereby the charge of the mold is adjusted,

substantially as and for the purpose set forth.

WM. W. POTTS.

Witnesses JoHN A. WVIEDERsHEIM, H. E. GARSED. 

